A kind of cationic rosin rubber emulsifier and preparation method thereof

A cationic rosin gum and emulsifier technology, applied in chemical instruments and methods, rosin addition, water repellent addition, etc., can solve the problems of lack of non-ionic emulsifier, weak system synergy, unstable system, etc., and achieve surface activity High, lower system free energy, lower production cost effect

Active Publication Date: 2018-06-19
SHANGHAI CHANGFA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the former method, the nonionic emulsifier and cationic emulsifier are simply compounded and then added to the emulsification system. The latter emulsification system only has cationic emulsifier and lacks nonionic emulsifier. The synergy of the system is weak, which may easily lead to system instability.

Method used

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  • A kind of cationic rosin rubber emulsifier and preparation method thereof
  • A kind of cationic rosin rubber emulsifier and preparation method thereof

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preparation example Construction

[0031] The invention provides a kind of preparation method of cationic rosin emulsifier, comprising the following steps:

[0032] Step 1, using a cationic monomer to prepare a cationic monomer solution;

[0033] Step 2, prepare monomer solution: mix vinyl monomer and acrylate monomer in proportion;

[0034] Step 3, preparing initiator solution: the initiator concentration is 1%;

[0035] Step 4, adding the surfactant into the reactor, then adding deionized water, and raising the temperature;

[0036] Step 5, when the temperature in the kettle is 60°C, add cationic monomer solution, monomer solution and initiator solution at one time, continue to heat up and control the temperature at 80±2°C, and keep it warm for 3 hours;

[0037] Step 6: After the heat preservation is completed, the temperature in the kettle is raised to 100°C, the deionized water is evaporated, and the solid content is adjusted to 35% to obtain the cationic rosin rubber emulsifier.

preparation Embodiment 1

[0040] Add 15g of surfactant OP-10 to the bottom of the kettle, add 300g of water, raise the temperature, and prepare cationic monomer solution (20g diallyldimethylammonium chloride + 50g water), monomer solution (methyl methacrylate 15g + vinylpyrrolidone 20g), initiator sodium persulfate solution (1.6g + 30g water), when the temperature in the kettle is 60°C, add cationic monomer, monomer solution and initiator solution at one time, and control the temperature at 80°C Nearby, keep warm for 3 hours, and then distill deionized water to a solid content of about 35% to obtain a cationic rosin rubber emulsifier.

preparation Embodiment 2

[0042] Add 15g of surface active OP-10 agent to the bottom of the kettle, add 300g of water, raise the temperature, prepare cationic monomer solution (20g acryloyloxyethyltrimethylammonium chloride + 50g water), monomer solution (butyl acrylate 15g+ Styrene 20g), initiator potassium persulfate solution (1.6g+30g water), when the temperature in the kettle is 60°C, add cationic monomer, monomer solution and initiator solution at one time, the temperature is controlled around 80°C, Keep warm for 3 hours, heat up and distill deionized water to a solid content of about 35% to obtain a cationic rosin rubber emulsifier.

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Abstract

The invention discloses a preparation method of a cationic rosin latex emulsifier, which comprises the following steps: Step 1, using a cationic monomer to prepare a cationic monomer solution; Step 2, preparing a monomer solution; Step 3, preparing an initiator solution; Step 4 , adding the surfactant to the reaction kettle, then adding deionized water, and heating up; step five, adding cationic monomer solution, monomer solution and initiator solution at one time; step six, distilling deionized water, adjusting the solid content to 35 % that is cationic rosin latex emulsifier. The invention adopts static aqueous solution polymerization, the production process is simple, the production efficiency is high, and it can be compounded with non-ionic surfactant to produce strong surface activity, adsorbed on the interface to form a complex, oriented and closely arranged, and form a high-strength interface film to prevent droplets Or re-condensed small solid particles.

Description

technical field [0001] The invention relates to the technical field of emulsifier preparation, in particular to a cationic rosin latex emulsifier and a preparation method thereof. Background technique [0002] Rosin is an extremely important paper-making sizing agent. It is rich in resources, not only has low sizing cost, but also can meet the sizing requirements of most paper and cardboard. Therefore, it can dominate a wide variety of pulp sizing agents status. [0003] Cationic rosin size is currently the most widely used rosin sizing agent. It carries a positive charge and can fix itself on negatively charged fibers without relying on aluminum sulfate. Therefore, the amount of aluminum sulfate is less than that of anionic dispersed rosin size. Achieve neutral sizing. However, because rosin itself has a carboxyl group, has a negative charge, and is solid and has a certain crystallization ability, it is difficult to obtain a stable cationic rosin latex. [0004] Therefor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F226/02C08F220/34C08F212/14B01F17/18D21H21/16D21H17/62C09K23/18
CPCD21H17/62D21H21/16C08F212/14C08F220/34C08F226/02C09K23/16
Inventor 施晓旦王虎金霞朝
Owner SHANGHAI CHANGFA NEW MATERIAL CO LTD
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